The T stands for Thymus.
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I believe photosynthesis produces ATP and oxygen. Answer C.
The lower epidermis layer contains stomata. Stomata prevent the loss of water and regulate the exchange of oxygen and carbon dioxide. The lower epidermis may also contain a waxy layer to further prevent water loss. Plant with these features are typically the xerophytic plants, which grow in arid conditions.
The poison dart frog suddenly increase if the predator that feeds off the dart frogs goes extinct or migrates to a different area then the dart fronts will have a much larger population.
This means that the resources the dart frogs rely on will start to diminish and their prey will have smaller numbers